IBM 4400 manual Bottom Margin, Set, Bottom Margin Cancel

Chapter 5 Configuring the Proprinter III XL Emulation with Control Codes

Bottom Margin, Set

ASCII Code ESC N n

Hex Code	1B 4E n
Dec Code	27 78 n
Purpose	Selects the number of lines (at the current line spacing) for the
	paper skip at the bottom of the perforated page.
where:	n = 1 through 255 (hex 01 through hex FF) to select the number
	of lines to skip. If the value of n exceeds the current forms
	length, it is ignored.
Comment	The actual distance set is the product of n and the current line
	spacing. Factory default value disables bottom margin. The
	current default value may be set by the operator. Setting a new
	forms length (ESC C) resets the bottom margin to zero.
	If the distance set is equal or greater than the form length,
	printing is only allowed on the top line of each page.
	This feature is disabled whenever vertical tabs are set.
	Bottom margin can also be selected from the control panel;
	however, vertical tabs within the bottom margin zone, as set by
	the control panel, are ignored. The control code bottom margin
	setting from the host computer overrides the control panel
	setting.

Bottom Margin Cancel

ASCII Code ESC O (alpha O)

Hex Code	1B 4F
Dec Code	27 79
Purpose	Resets bottom margin to zero.

Cancel

ASCII Code CAN

Hex Code 18

Dec Code 24

Purpose Clears the print buffer of all printable symbols since the last paper motion command was received.

Comment This control code may be used as a delete line function but should be used with extreme care to avoid possible misprinting. This control code cancels the double wide attribute set by SO if active. No other print attributes are affected.

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